INFORMATION ON SOVIET BLOC INTERNATIONAL GEOPHYSICAL COOPERATION - 1959

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April 17, 1959
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I`NTERNATIONRL YEFiR; "I NFORMRT I ON pproved For Release 1999/09/08 : CIA-RDP82-00141 R000200630001-3 ~1) P13 131632-62 INFORMATION ON SOVIET BLOC INTERNATIONAL GEOPHYSICAL COOPERATION - 1959 April 17, 1959 U. S. DEPARTMENT OF COMMERCE Office of Technical Services Washington 25, D. C. Published Weekly Subscription Price $12.00 for the Series Approved For Release 1999/09/08 : CIA-RDP82-00141 R000200630001-3 Approved For Release 1999/09/08 : CIA-RDP82-00141 R000200630001-3 PLEASE NOTE This report presents unevaluated information on Soviet-Bloc activities in the International Geophysical Cooperation program from foreign-language publications as indicated in parentheses. It is published as an aid. to United States Government research. INTERNATIONAL GEOPHYSICAL COOPERATION PROGRAM SOVIET-BLOC ACTIVITIES Table of Contents Page I. General 1 II. Rockets and Artificial Earth Satellites 5 III. Upper Atmosphere 10 I. Seismology 13 (r. Gla:iology 14 VI. Arctic and Antarctic 16 Approved For Release 1999/09/08 : CIA-RDP82-00141 R000200630001-3 Approved For Release 1999/09/08 : CIA-RDP82-00141 R000200630001-3 Ukrainian Participation in the IGC Investigations in the fields of terrestrial magnetism and electric- ity, oceanology, meteorology, aurora, meteor astronomy, solar activity, time service and systematic observations of artificial satellite move- ments are being conducted at 18 scientific establishments located through- out the -territory of the Ukraine. The scope, achievements, and objectives of 'these Ukrainian activities are well summarized in a Ukrainian magazine article by B. G. Bondarchuk, an Academician at the Academy of Sciences Ukrainian SSR and chief of the Organizational Committee of the Academy of Sciences Ukrainian SSR for the IGY. Work of particular importance in the .IGY program is being conducted by such organizations as the Main Astronomical and Poltava Gravimetric observatories, the Institute of Geological Sciences and the Institute of the Geology of Useful Minerals of the Academy of Sciences Ukrainian SSR, the Hydrometeor.ological Services Administration of the Ukrainian SSR, the Kiev State University imeni T. G. Shevchenko, the Astronomical Observa- tories of Khar'kov, L'vvov and Odessa state universities, Kharkov Poli- 'technic Institute imeni V. 1. Lenin, the Kharkov State Institute of Standards and Measuring Instruments, and a number of other establishments. Coordination of operations at these organizations for the IGY pro- gram is maintained by the Organizational Committee of the Academy of Sci- ences Ukrainian SSR. Considerable preparatory work was done by the Ukrainian participants to insure successful execution of assignments for the IGY program. Ex- isting observatories were equipped with new instruments. 'In the vicinity of Kiev, a magnetic station was built for the Institute of Geological Sciences of the Academy of Sciences Ukrainian SSR for the study of the geomagnetic field of the Earth., Special stations for observation of the pulsations of electric Earth currents were constructed by the :Institute of the Geology of Useful Minerals,, Academy of Sciences Ukrainian SSR at Koretz, Morshin, and Uzhgorod. All observatories and certain locations near Kiev, Khar'kov, and Odessa were equipped with stations for visual, photographic, and radio observations of meteors and artificial satellites. Great effort was made by Ukrainian scientists to perfect techniques for geophysical observations. As an example, the collective of scientific workers at the Kharkov Politechnic Institute imeni V. I. Lenin developed an original apparatus for the study of meteors and the upper layers of the atmosphere by a radar method. Through the use of this equipment, new facts were obtained about the movement of meteorites. It was established that a Approved For Release 1999/09/08 : CIA-RDP82-00141 R000200630001-3 Approved For Release 1999/09/08 : CIA-RDP82-00141 R000200630001-3 predominate number of these bodies move in a straight line, and have orbits near to the plane of the ecliptic. Workers of this :institute also con- structed new equipment and began observations of winds at altitudes of 80 to 100 kilometers for the first time in the Soviet Union. The new "meteor patrol" apparatus for automatic photographing of meteors was developed at the Astronomical Observatory of Odessa State University imeni I. I. Mechnikov and is being widely utilized in obser- vatories of the Soviet Union and the People's Democracies,. A new molecular clock, distinguished by its accuracy and stability, was developed at the Khar'kov State Institute of Standards and Measuring Instruments. Data from observations utilizing this instrument are being widely used by the Time Service of the Soviet Union. Operations of the Astronomical Observatory of Kharkov State Univer- sity imeni Gor'kiy and the Kharkov Institute of Standards and Measuring Instruments on the problem of determining time and longitude are greatly facilitated by the best quartz clock in the Soviet Union. Interesting information on the irregular movement of the Earth about its axis was obtained by the observatory with this instrument. A new chromospheric?-phottospheric telescope was installed at the Main Astronomical Observatory of the Academy of Sciences Ukrainian SSR, per- mitting more accurate astronomical observations. Workers at this ob- servatory have also developed a new method for determining coordinates of artificial satellites. Prediction of the exact position of a satellite at any given time is possible by an original method, developed by workers at the Astronomical Observatory of Lvov State University imeni Ivan Frank. The new instru- ment employed for this method was built at the Astronomical Observatory of the Kiev State University. Considerably more ac.curate satellite ob- servations and less calculation time are possible with the new method. Important work in the IGY program is being performed by the Poltava Gravimetric Observatory of the Academy of Sciences Ukrainian SSR. This organization is the all-union center of the latitude ser-,ice and the main scientific establishment of the IGY and is concerned witrL the problem of variations of latitude and pole displacements. This observatory is united with stations in Pulkovo, Moscow, Kazan Kitab, ::Irkutsk, and Blagovesh- chensk, from which material on latitude observations is relayed to Poltava for processing and generalization. New methods have also been developed here for the determination of polar coordinates from data or. azinnrath ob- servations. Approved For Release 1999/09/08 : CIA-RDP82-00141 R000200630001-3 Approved For Release 1999/09/08 : CIA-RDP82-00141 R000200630001-3 The task of collection and publication of data gathered from 22 zenith telescopes in 16 observatories throughout the world was assigned to the Poltava Observatory at the Tenth Congress of the International Astronomical Society. Preparations are now being made for the organi- zation of a special laboratory to function as a permanent world center for processing latitude observations. The Crimean Astrophysical Observatory serves as the international center and the main institution of the Soviet Union in the study of the problem of investigation of solar activity. From the scientific and equipment aspects, the observatory is one of the best in the world. Unique equipment has been developed by this organization for study of the structure of the ionosphere and radio emissions from the Sun. Studies of the Sun also maintain an important position in the IGY program. Particular at ention is given to the study of chromospheric flares which are associaued with such natural phenomena as geomagnetic and ionospheric storms., aurora, and the intensity of corpuscular, and X-ray and ultraviolet radiation. Observatories of the Ukrainian SSR, which are performing studies of the Sun, had accumulated valuable material during the regular IGY. At the Astronomical Observatory of Kiev State University alone, over 650 groups of sunspots and 54 chromosphere flares were registered in 1958. Spectrograms of the chromosphere flares and prominences, etc. were also obtained. These investigations produced new data on the structure of the hydrogen and calcium atmosphere of the Sun, the nature of the asymmetry in the equatorial maximums of geomagnetic storms, pecularities in the structure of the chromosphere, etc. Important investigations on the problem of auroras are being con- ducted by the Chair of Astronomy of Kiev State University. Basic ob- servations are being conducted at a station on the Bay of Tiksi, which was constructed for this purpose. This station is equipped with in- struments of native construction which are of a precision unequaled in foreign observatories. Results of these investigations have produced new data concerning the structure, development, and distribution of auroras, corpuscular flows, etc. Preliminary processing of magnetograms obtained at the Kiev Magnetic Station of the Institute of Geological Sciences of the Academy of Sci- ences Ukrainian SSR give evidence of the true concurrence of magnetic storms and aurora observed at Ukrainian meteorological stations in 1958. Approved For Release 1999/09/08 : CIA-RDP82-00141 R000200630001-3 Approved For Release 1999/09/08 : CIA-RDP82-00141 R000200630001-3 The main center for the study of meteors is the Astronomical Ob- servatory of Odessa State University. New meteor observation stations were constructed in the villages of Mayaki and Krizhanovka and also in the Odessa Botanical Garden. The special "meteor patrol" considerably improves the precision of meteor observations. Activities in meteorology, astronomy, and oceanography are being conducted by the Hydrometeorological Service Administration of the Ukrainian SSR and the Ukrainian Scientific Research Hydrometeorological Institute. Similar operations are being conducted on 16 mainland sta- tions and about ten stations on ships. Certain regularities as to the distribution of the electric field in the atmosphere of the Earth in relation to meteorological conditions and altitude were established from results of investigations. It was discovered that at an altitude of 500 meters, the maximum factor of the electric field strength is connected with certain pecularities in the circulation of the atmosphere which effect the variation of climate over the Ukraine. The first results were also obtained for the heat balance over the territory of the Ukraine. Oceanological observations are being performed principally by the Hydrometeorological Observatory of the Black and Azov seas of the Hydro- meteorological Service of the Ukrainian SSR. These observations are supplemented by approximately 65 maritime hydrometeorological stations and posts dispersed along the coast line and also on ships of the Azov- Black Sea Fleet. From the results of observations for the IGY program, it was possible to construct a map of the distribution of hydrological and hydrochemical elements at various depths of the Black Sea, a dynamic chart of currents, and to obtain improvement of the bottom relief map for the Black Sea. Investigations throughout the course of IGG will be conducted at the level attained in 1958. Particular attention will be paid to the processing of collected facts and observational data and further im- provement in the accuracy of observations. (Additional information on Ukrainian participation in the IGC is presented in the form of a map sketch and photograph. The map shows the location of points where observations are being conducted according to the IGY program in the territory of the Ukrainian. SSR. The photograph shows the expeditionary vessel Gorizont of the Hydrometeerological Service of the Ukrainian SSR.) ("International. Geophysical Cooperation," by V. G. Bondarchuk, Academician, Academy of Sciences Ukrainian SSR, and chairman of the Organizational Committee for the IGY of the Academy of Sciences Ukrainian SSR; Kiev, Nauka i Zhytta, No 2, Feb 59,. pp 21-24) Approved For Release 1999/09/08 : CIA-RDP82-00141 R000200630001-3 Approved For Release 1999/09/08 : CIA-RDP82-00141 R000200630001-3 0 Conference of. Young Scientists-Geologists A conference of young scientists-heol og1sts or the Transcaucasian republics was held in Yerevan from 2_8 October to 10 Noverioer 1953. The conference was called by the Institute of Geolo.-ical Sciences of the Academy of Sciences Armenian SSR. A dcl.el,;ation from the Institute of Geology of the Academy of Scicnc:;o Turlanen SSR compo;;.:d of S. Amanov and K. Tegelekov, aspirants, took part in the work of the coriCerence. Many reports on problems of stratiC;rr.pay and tectonics, petroleum and las geology, ma,netism and vulcanology, mineralogy and geochemistry, hydrogeology, and mine structures were read and discussed. A resolu'-?'on establishing yearly meetings for young scientists- geologists was accepted by the participants in the conference. ("Con- ference of Young Scientists-Geologists," by S. Amanov, Institute of Geology, ?!kcademy of Sciences, Turkmen SSR; Ashkhabad, Izvestiya Ak- ademii Nauk Turkmenskoy SSR, No 6, 1958, p 120) II. ROCKETS AND ARTIFICIAL EARTH SATELLITES Noomeyanov Speech on Soviet Cosmic Research at Annual Meeting of Academy of Sciences USSR Academician A. N. Nesmeyanov, president of the Academy of Sciences USSR, generalized the investigations of Soviet scientists in the field of cosmic exploration by means of rockets and artificial earth satellites. The speech, "The Investigation of Cosmic Space `11.+.h the Aid of ocl-ets and Sputniks," was delivered at the closing session of the annual meeting; of the Academy of Sciences USSR, After describing the first Soviet artificial earth satellites, Nes- ileyanov said that it was important to note that the launching of the rocket toward the Moon from Soviet territory ;ias more difficult than a laur_c'iing from lower latitudes. Soviet territory cannot intersect with the plane of the Moon's orbit, which, at present, lies approximately between 18 17 and 18 S. This eliminates the possibility of using tra- jectories lying in the plane of the lunar orbit and which are more ad- vantaGeous for a flight in the region of the Moon. Approved For Release 1999/09/08 : CIA-RDP82-00141 R000200630001-3 Approved For Release 1999/09/08 : CIA-RDP82-00141 R000200630001-3 In addition, not all. days of the month are equally favorable for the launching; of a rocket. The most favorable location of the Moon in orbit for a launching from Soviet territory is when its inclination is at a minimum and con- sists of about 18 degrees. A considerable deviation from this condi- tion leads to a very substantial loss in the weight of the payload. The '.-:y selected for the rocket flight near the moon was the one in which its position deviated least from the optimum. The launching of artificial Earth satellites and the cosmic rocket made it possible to obtain results of fundamental scientific value on the investigation of the upper layers of the atmosphere and cosmic space. Nesmeyanov dwelt only on those experiments on which processing has been completed at present to the greatest degree. The unique aureole around the Earth was successfully discovered for the first time with the aid of the Soviet cosmic rocket. This aureole, as present Soviet ex.- periments show, is composed of electrons with energies of tens and hundreds of thousands electron volts. The aureole extends for a distance greater than 10 earth radii. A sharp increase in X-radiation beginning at a geomagnetic latitude of about 55 degrees was discovered with the aid of instruments carried by Sputniks II and III. Thus, the permanently existing electron com- ponent of the Earth's corpuscular component was discovered. The energy of these electrons is about 100,000 electron volts. The results obtained by the cosmic rocket made it possible to establish that the newly dis- covered electron component and the aureole around the Earth are one and the same phenomenon. In addition to the Zones of increased intensity existing in the polar regions near the Earth and at distances up to 10 earth radii, a second zone of high intensity ex.iFts which begins at an altitude of more than 1,000 kilometers. Soviet scientists made a more detailed study of this second zone. It was shown that it begins at an altitude of about 600 kilometers in the Western Hemisphere, but it is considerably over 1,000 kilometers high in the Eastern Hemisphere. In addition; it was established that this region stretches from the equator up to latitudes of 45 degrees. An analysis of the composition of the radiation showed that the energy of particles in the second zone is considerably higher than in the first zone. Approved For Release 1999/09/08 : CIA-RDP82-00141 R000200630001-3 Approved For Release 1999/09/08 : CIA-RDP82-00141 R000200630001-3 Powerful streams of particles possessing a very short path length were discovered by Soviet scientists with the aid of Sputnik III and the cosmic rocket. Certain hypotheses on the origin of this form of radiation were explained by Nesmeyanov. According to one of these theories, this radiation arises with the interaction of cosmic rays with the earth's atmosphere, as a result of which there arise, in particular, neutrons, decaying afterwards into electrons and protons. Another theory holds that these corpuscles are discharged from the Sun and are caught in the trap of the earth's magnetic field. Finally says Nesmeyanov, it should be mentioned that if..the prod- ucts of atomic explosions get into the higher altitudes, they create intensive streams of charged particles there. Thus, atomic., explos9.ons can lead to the contamination of that part of the cosmos near the Earth. Soviet physicists obtained valuable information in the composi- tion of heavy nuclei in cosmic radiation. They showed that the stream of charged particles in cosmic radiation is extremely small. Soviet scientists have made an enormous contribution to the study of the upper atmosphere. Data on the density, temperature, the con- centration of electrons and positive ions and other parameters of the upper atmosphere in the region of altitudes of 225-1,000 kilometers were first obtained by them. The earlier representations that the limit of the atmosphere reached up to 1,000 kilometers has been fully disproved by Soviet researchers. At present, it is possible to assert that this limit extends up to con- siderably higher altitudes. With the aid of the cosmic rocket, the first experimental data on the density of interplanetary gas was obtained. The mass spectrometer investigations conducted with Sputnik III on the composition of particles in the upper atmosphere gave extremely valuable results. Outstanding data on magnetic measurements were obtained by Soviet scientists. For the first time, the deep origin of the sources of the East Siberian magnetic anomalies were determined. The effects of iono- spheric current systems causing perturbed variations of the Earth's magnetic field were discovered. The discovery of an exoatmospheric current system at a distance of 3-4 earth radii is a fundamental result in the field of magnetic measurements by the cosmic rocket. Soviet biologists conducted a unique experiment with the dog Layka. This was the first experiment in the history of biology in which a highly organized creature remained for a long time in cosmic space. Approved For Release 1999/09/08 : CIA-RDP82-00141 R000200630001-3 Approved For Release 1999/09/08 : CIA-RDP82-00141 R000200630001-3 Ncsmeyanov concluded his speech by praising all who had a part in the launching of the artificial earth satellites and the cosmic rocket. ("Out- standing Contribution of Soviet Scientists in the Investigation of the Cosmos"; Moscow, Pravda, 29 Mar 59, p 3; "Investigation of Cosmic Space With the Aid of Rockets and Sputniks"; Moscow, Izvestiya, 29 Mar 59, p 2) Rocket Displays at USSR Exhibition The "Nauka" [Science] pavilion at the Exhibition of Achievements of the National Economy of the USSR, which closed 29 March, contained o. sec- tion devoted to Soviet achievements in rocket technique. Much material was devoted to the investigation of the upper atmos- phere with the aid of rockets. Displayed in the science pavilion were models of the meteorological rocket MR-1 and the nose cones of Al and A2 geophysical rockets. These rockets were used for measurements at al- titudes up to 110-212 kilometers. The nose cone of the A3 rocket is in- teresting. With a load of 1,520 kilograms it reached a record height of 472 kilometers. Along with the nose cones, the enormous parachutes which safely lowered both instruments and experimental animals were also shown. The complex system of three parachutes for the A3 rocket exceeds an area of 700 square meters. Models of Sputniks I, II, and III and their scientific apparatus were also displayed. ("Closing the Exhibition Pavilions...," by A. Kon- drat'yev, chief of the Department of Information and Printing of the Exhibition of the Achievements of the National Economy of the USSR; Moscow, Promyshlenno-Ekonomicheskaya Gazeta, 1 Apr 59, p 4) Artist's Conception of Lunar Scientific Station An artist's conception of a lunar scientific station appears in Tekhnika Molodezhi, a Soviet popular science magazine. The laboratory installation is shown built under a thick layer of rocks, where it is protected from meteorites and where the sharp changes in the temperature of the lunar day and night will not be felt. The station is a cylindrical two-deck affair, the upper deck of which contains a laboratory, the point in which control of the varied activities of the scientific station is concentrated, the communications room, and living quarters. The lower deck contains storage facilities for oxygen, water, fuel, spare parts, and instruments. Approved For Release 1999/09/08 : CIA-RDP82-00141 R000200630001-3 Approved For Release 1999/09/08 : CIA-RDP82-00141 R000200630001-3 An astronomical observatory, a radiotelescope, a battery of photo- elements feeding the station batteries, and a radio tower for Earth com- munication are shown on the surface of the Moon nearby. An electrically driven caterpillar tractor with mechanical arms is used for lunar explora- tions by the station personnel in space suits. A greenhouse serves as a supplementary source of food. A space rocket for travel to the Earth is shown in the background. ("Window into the Future"; Tekhnika Molodezhi, No 2, Feb 59, p 36) Approved For Release 1999/09/08 : CIA-RDP82-00141 R000200630001-3 Approved For Release 1999/09/08 : CIA-RDP82-00141 R000200630001-3 Soviet Scientist Discusses Kozyrev's Discovery of Moon Volcano N. A. Kozyrev's report on the observation of volcanic activity on the Moon and the launching of the Soviet cosmic rocket shortly there- after raised the interest in t1'at, natural satellite of the Earth to he:Lgh-t-s never before reached. In answer to a request by two readers, an article by A. Dadayev, a review of which follows, on Kozurev's dis- covery was published in Sovetskaya Aviatsiya. Recently, great reliance has been placed on direct methods of investigating the lunar surface with the aid of rockets. Moreover, it appears that not all ground-based means for studying the Moon have bc:,.:,.i used, in particular, the spectroscope. Perhaps this con- dition arose because it was considered that the lunar spectrum, so to speak. only reproduced the spectrum of the Sun. Prof Kozyrev long maintained that the Moon must have its own radiation. In his works, a particular kind of radiation, the lumines- cent brightness of certain matter under the action of hard ultravio- let radiation from tLe Sun, is indicated. Kozyrev's first results, obtained in 1955, supported his belief that luminescence of materials on the Moon actually exists. It was important to isolate this luminescence on the background of the sun- light reflected from the Moon. Lis was possible through the use of the spectrograph. The lunar crater Alphonsus was selected as a suitable object for observation. An observational program in 1958 was conducted by Prof Kozyrev In the Crimean Astrophysical Observatory, using its 50?-inch reflector with a spectrograph. No indications of luminescencent brightness were observed in a considerable number of spectrograms made, and it was only on 3 November at about OIE00 hours, that the central peak of the crater appeared redder than usual. By 0600 hours, the cen- tral peal was very bright and shining. A spectrogram obtained at the time revealed an interesting phenomenon: in the blue part of the spectrum a luminescence appeared quite clearly over the central peak. A spectrogram made at 0630 hours showed the crater had re- turned to its normal state. The tifnole phenomenon Tasted several hours. Obviously, in the beginning, an ejection of dust (volcanic ash) occurs?ed, and then a large amount of gases were discharged. Rising to the surface, the gases, under the action of the Sun's radiation, decomposed into more simple molecules whose luminescence was observed. An approximate calculation of the quantity of gases discharged resulted in a figure of 100,000 cubic meters; the Approved For Release 1999/09/08 : CIA-RDP82-00141 R000200630001-3 Approved For Release 1999/09/08 : CIA-RDP82-00141 R000200630001-3 inolecu].ca of gas had a velocity of 200 motors per second. Thus, the whole process was extremely violent, which is an indication of the occurrence of a volcanic eruption and not the slow emanation of gases from lunar fissures. Something should be said on an intrinsic peculiarity of lunar volcanoes. Since their eruption occurs in the absence of atmosphere, then the volcanic flame rising as a result of the union of strongly heated products of the eruption with oxygen cannot be seen. The lunar volcano manifests itself only because of the fluorescent illumination of gases, erupted and decomposed into simple molecules. Inasmuch as the fluorescence there occurs under the action of thu sun's rays, it is impossible to observe the eruption of volcanoes at night on the ..do of the Moon not illuminated by the Sun. That is why eruptiins on the Moon were not observed before, although they may possibly not be a rarity. The reason volcanism on the Moon is possible is the same as that for it on the Earth, says Dadayev. At present, we think that molten magma !.s formed in specific foci deep under the Earth's surface as a result of the accumulation of heat from the decay there of radioactive elements. The extremely low thermal conductivity of the surface layers must undoubtedly contribute to the build-up of heat. It should be mentioned, says Dadayev, that apparatus for studying the Moon's radioactivity was carried by the first Soviet cosmic rocket. ("How the Volcano on the Moon Was Discovered," by A Dadayev, Candidate of Physicomathematical Sciences; Moscow, Sovetskaya Aviatsiya, 28 Mar 59, p 3) Study on the Effect Geological Conditions on Neutron Flux in the Earth The problem of studying the neutron flux of the Earth in zones of beryllium deposits was undertaken by V. V. Cherdyntsev and 0. V. Suya- rova. This was based on the acceptance that the main component of the Earth's neutron flux are neutrons of , oC , n) reactions, and the matter generatin3 neutrons for the most part is beryllium. In addi- tion, a comparative study of neutron flux in a laboratory (in the city of Alma Ata, 800 meters above sea level) and in one of the glaciers in the neighborhood of the city (about 3,11.00 meters above sea level) was conducted. Thin-layered plates, the emulsions of which were in contact with a saturated (for alpha-radiation) layer of boron carbide (77 percent boron), were used for registering neutrons. The plates were treated with an oxidizer, potassium ferricyanide salts, for eliminating latent Approved For Release 1999/09/08 : CIA-RDP82-00141 R000200630001-3 Approved For Release 1999/09/08 : CIA-RDP82-00141 R000200630001-3 alpha-ray i.muf,es. The ial.utun were exposed in standard parafin envelopes (1.):tc cutttimetur thick), owing to which the relative number of slow neu- i::?otuu wau uomewhut Increased. The envelopes were used as shielding ..rr a Lnot mo Ls tune which would cause a regrc-soion of the alphaparticles. Ct.u'.cu]atLon showed Lat for approximately 1.00 neutrons passing through to pl.atc, one track appeared passing through the boron layer into the cmuul.0loll. The sensitivity of the plates proved insufficiently stable, reuul.ting in too great an accumulation of background particles (about three to ten alpha-particles per square centimeter per day). The ac- cur:ucy of the experlmcnto was not very high. A field radiometer was used for studying the guunna radiation at all points where work was conducted. It was found that there was no increase of neutron flux in the region of pegmatite beryllium deposits and in nona.ctive parts of pneumatolytic beryllium deposits. Slow neutrons predominate in the flux, since they enter mainly from the atmosphere, as it is possible to determine through experiments with plates screened with cadmium filters. A measureable flux of slow electrons was found neither in the L.